This 4.2L V8 engine offers a supercharged option for substantial power enhancement, excluding XJR models. The multi-point fuel injection improves fuel delivery efficiency, while the forced-induction V8 layout supports high-output performance. Its dual overhead camshaft (DOHC) ensures precise timing, ideal for drivers needing a powerful and reliable used engine. This engine provides a strong balance of power and durability in demanding driving conditions.